Yuzo Koshiro and Ancient’s Earthion is a rare retro-styled shooter that doesn’t merely imitate the 16-bit classics—it captures their spirit because, importantly, it was designed with that intention. Built to run on original Mega Drive/Genesis hardware and carefully adapted for modern platforms, Earthion plays like a forgotten cartridge pulled from an alternate 1994—only now enriched with three decades of genre experience.
What it is (and why it feels different)
Earthion is a side-scrolling shoot-’em-up featuring environmental researcher-pilot Azusa Takanashi through eight quick, theme-rich levels, each ending with a boss that challenges a different skill (macro-dodging, route planning, resource management, or pattern recognition). It offers difficulty options—Hotshot for purists—and a Challenge mode plus online leaderboards to keep players engaged. The ports include features like adjustable scanlines and a tidy achievement set, all without altering the original timing and rhythm.
Handling & Systems
The first thing you notice is the feel. Inputs are crisp and clear, and Ancient resists the temptation to “bullet-hell” everything. Instead, Earthion resembles Thunder Force IV more than DoDonPachi: lanes open, close, and reopen; enemy swarms promote controlled aggression rather than frantic dodging. A small but impactful design choice is its shield and checkpoint leniency: you can take a few hits and continue without punishing full-stage restarts, which encourages learning through play rather than rote perfection. It’s still not easy—but it’s fair.
Weapon progression remains traditional—main shot, sub-weapons, and power-ups—but stage layout influences the importance of loadout components. Caves and industrial corridors reward broad coverage; open-space sorties favour precision. Scoring encourages aggressive play, but survival routes stay viable, maintaining balanced play and scoring options.
Stage & Boss Craft
Each of the eight levels features a distinct identity—earth-scoured ruins, cavern mazes, orbital gauntlets—and the bosses are genuine set-pieces with clear telegraphs, second-phase surprises, and just enough health to make no-miss runs tense rather than dull. Patterns build gradually instead of spiking unexpectedly, and hitboxes feel fair. It’s classic arcade teaching: fail, understand, improve.
The Soundtrack (and the Koshiro factor)
Koshiro’s score does a lot of heavy lifting. It’s propulsive, percussive, and melodic in that specific late-16-bit way, where basslines grind while leads soar. The OST’s 20-plus tracks shift between crunchy drive and airy space-opera, and significantly, they’re mixed to sit beneath effects rather than fight them—so weapons read clearly without dulling the music. The package includes a generous in-game tracklist, and on PC/Switch, the audio pipeline is clean—no crunchy resampling ruining the retro vibe.
Presentation & Performance
Visually, Earthion combines pixel art with restrained effects (parallax, sprite scaling, occasional pseudo-3D flourishes) that would have been impressive on a real cart but never feel like modern shader cosplay. On PC and Switch, performance remains stable, input latency is low, and the aesthetic looks great on OLED handhelds and large screens alike. Optional CRT/scanline treatments are particularly tasteful—more “subtle texture” than cosplay-filter.
If you’re lucky enough to see or play the EXA Label arcade variant, it layers on extra technical polish (reduced lag and some mode tweaks), underlining how robust the core engine is. But you don’t need an arcade to feel the tightness; the retail builds already deliver.
Quibbles
Aesthetic sameness can creep in mid-campaign: the palette leans cool-industrial across a few stages, so the big visual “wow”s are front- and back-loaded.
The forgiving shield/checkpoint model is a philosophical win, but some genre die-hards may miss the ruthless tension of true one-hit fragility.
Outside of leaderboards and Challenges, side content is modest—this is a focused shmup, not a museum piece.
Context & Conversation
Earthion arrived with an unusually authentic feel—designed initially for 16-bit hardware, then ported—and a brief controversy when an encrypted distributable ROM wrapped in the PC release was cracked and circulated. Koshiro publicly asked players to support the official releases, and a proper Genesis cartridge will be released separately. None of this affects how good the shipped game is, but it highlights Ancient’s “retro-first” thesis: this isn’t a cosplay of 1990s shooters—it is one, brought onto modern storefronts.
Earthion is an exhilarating, finely-tuned shmup that captures why we loved the 16-bit era: clarity, rhythm, and impact. It’s accessible without being weak, challenging without being harsh, and it sounds—unsurprisingly—phenomenal. Whether you’re aiming for your first clear or shaving seconds and lives off a Hotshot run, it’s the kind of game that has you saying “one more go” at 1 a.m.